Insulating board



Feb. 25, 1941. R. AMoRosl INSULATING BOARD Filed NOV. 7, 1938 6fm @www 1N VENTOR.

Patented Feb. 25, 1941 UNITED STATES PATENT OFFICE 7Claims.

I'his invention relates rto vacuum cell insulation boards adapted for use in building construction roofs of automobiles, heating, air-conditioning and refngerating structures.

The object of the present inventori is to provide an improved insulation means, of the type indicated, in board or slab form that can be easily handled and cut into sections for install-ation with :the greatest economy of space and material.

T-he objects of :the invention are accomplished by means of a construction as illustrated in the accompanying drawing, wherein:

Fig. 1 is an end view of the insulating board partly in section.

Fig. 2 is a plan or face view of the board partly in section.

In 'the form shown in the drawing my improved insulating board comprises a hollow metal inner structure formed of itself, 'to provide a plu- 25 rallty of enclosed hermetically-seaied cells or chambers i which constitute separate individual spaces having no connection with each other. 'I'he inner structure, which comprises walls 2, is made of any suitable, substantially-rigid mate- 25 rial such as sheet metal andisformed byproviding pan-like wall members having upstanding edges and marginal .fianges projecting outwardly therefrom, together with fiat-surfaced, upstanding transverse ribs; which pan members are then set face to face with rthe flanges and` ribs abutting each other, the abutting flanges and rflat-surfaced ribs being joined to one another by any sui-table means such as welding, whereby air-.tight seams or joints 3 are formed. Thus, the flanges seal the hollow inner structure at its margins and the abutting ribs divide the interior of the inner structure into a lplurality of air-tight cells, .the side walls of the inner structure .between the flanges and the ribs being spaced from each other by the upstanding edges and the ribs to provide the cell cavities.

In the form shown, the inner structure of my improved insulating board is further reinforced by spacing members '4 disposed in substantially :the center of each cell or space I and extending between the side walls 42. These spacing members 4 serve rto prevent crushing or collapsing of the side walls under atmospheric pressure or mechanical force, and are held in place by any suitable means suclras by welding.

After the inner structure is formed the inner cell or chamber may be exhausted in any suitable manner, several of which are known in the art, thus removing dead air and providing a vacductiomand increasing the insulating emciency of the board as a whole.

As shown, the inner structure of my improved board is wholly covered on its outside by a sultable brous insulating covering 5 which is glued 5 or otherwise secured to the outside of the side walls 2. This ibrous material covering serves to provide a more readily handled board and :to protect the inner structure from damage and further serves to minimize heat transfer by con- 10 duction or convection from the outer wall surfaces of the inner structure. Also, 'the brous covering material provides a means for causing plaster to readily adhere to the outer surface of the insulating board or block, the `iibrous coverl5 ing being preferably of a somewhat soft, rough or porous nature on its outer surface so .that plaster when applied .to the covering will strongly adhere to the same.

In order to provide means for indicating the 20 seams or joints; that is, the location of the flanges and the abutting ribs of .the inner structure of my improved board, Ithe outer fibrous covering 5 is provided with cutting grooves 6 which, as shown in the drawing, extend along the center line of the abutting ribs. Thus', should it be desired .to cut the improved board into smaller sections, .the grooves 6 will serve as a cutting guide so that the cutting operation will not break inw or open any of the vacuum chambers or cells I. Also, preformed holes l are drilled through the board at intervals along the grooves 6 for nail ing purposes so that lthe boards may be fastened in place without any of fthe fastening nails puncturing the cells 1i It will now be seen .that my improved insulation board comprises a readily divisible board of block containing self-formed chambers or cells which provide the principal means for resisting and preventing rthe transfer of heat through Ithe 40 board, the particular advantages of the construction being that lthe board or panel may be cut into sections without destroying the insulating function of any of the cells. Other advantages will be found in that the nature of the improved 45 construction will permit the board to be made in either curved or ilat forms 'to conform .to whatever surface against which the board is to be used as an insulating medium.

Although but one specific embodiment of this invention is herein shown and described, it will be understood that details of the construction shown may be altered or omitted without departing from #the spirit of this invention as denned by the following claims:

1. An insulating board comprising a hollow airtight inner shell having opposite transversely-extending and inwardly-projecting fiat surfaced ribs arranged to abut each other, said ribs being mutua-ily Joined and hermetically sealed against their abutting nat surfaces to divide said inner` shell into individually sealed sections, and a ii- .brous plaster-adhering outer covering secured upon and completely enclosing said inner shell.

2. An insulating board comprising a hollow airtight metal inner shell having opposite transversely-extending and inwardly-projecting fiat surfaced ribs arranged to abut each other, said ribs being mutually joined and hermetically sealed` against their abutting flat surfaces to divide said inner shell into individually sealed sections, and` a fibrous plaster-adhering outer covering secured upon and completely enclosing said inner shell.

3. An insulating board comprising a hollow airtight inner shell having opposite medially-disposed transversely-extending and inwardlypro` jecting flat surfaced ribs arranged .to abut each other, said ribs being mutually joined and hermetically sealed against their abutting flat sur-` faces to divide said inner shell into individually sealed sections, and a brcus plaster-adhering outer covering secured upon `and completely enclosing said inner shell.

4. An insulating board comprising a substan-` .tially rigid hollow air-tight inner shell having opposite transversely extending and inwardlyprojecting fiat surfaced -ribs arranged to abut each other, said -ribs being mutually joined and hermetically sealed along their abutting fiat surfaces to divide said innerlshell into individuallysealed sections, and an outer covering of matted fibrous material secured upon .and completely enclosing said inner shell.

5. An insulating board comprising a hollow airtight inner shell having opposite transverselyextending and inwardly-projecting fiat surfaced ribs arranged 'to abut each other, said ribs being mutually joined and hermetically sealed against their abutting flat surfaces to divide said inner shell into individually-sealed sections, and a plaster-adhering outer covering of heat insulating material secured upon' and completely enclosing said inner shell, said outer covering having means on the outer surface .thereof and extending medially along the rabutting fiat-surfaced ribs of the said inner shell to indicate the position Yof said ribs.

6. An insulating board comprising a hollow airtight inner shell formed of marginally flanged pan-like members set face to face with the ianges in mutual abutment, said pan-like members having :transversely-extending and inwardly-projecting yfiat-surfaced ribs arranged to abut each other when said pan members are set face to face, and saidv -ribs Vand said flanges being mutually joined and hermetically sealed along -their abutting flat surfaces .to divide said inner shell into individually-sealed cells, Iand an outer covering of relatively soft fibrous insulating material secured upon and completely enclosing said inner shell.

7. An insulating `board comprising a stiff substantially rigid hollow air-.tight unitary inner core arranged to provide a plurality of spaced :30

non-communicating cells disposed side by side in `the plane of Ithe said board, said cells being each ,hermetically sealed, and a plaster-adhering outer cover of brous heat insulating material secured fast upon all surfaces of and completely enclosing 35 said hollow inner core, all arranged .to form a unitary flat surfaced board-like structure.

RAOUL AMOROSI. 

